Business leaders often want to motivate their staff with pep talks on innovation, creativity, and change. Thought leader Brené Brown upends that approach by making a case for focusing on—wait for it—vulnerability.

I don’t pretend to know everything it takes to be a great leader. I do know that I have tremendous respect for business people who are calm, decisive, energized, and really present. I also know that I’m at my professional worst when I’m frenzied, unfocused, tired, distracted. And I’ve noticed that I often get bogged down by a most curious phenomenon: clutter.

Last week I shared the first of three phrases, each coincidentally three words long, that I believe to be an essential part of any trusted advisor toolkit: “That makes sense.” This week’s three-word phrase is “I don’t know.”